"The 'good old times' - all times when old are good"

Lord Byron's quote speaks to the idea that nostalgia can be a powerful emotion. It recommends that when we look back on the past, we tend to bear in mind the good times and forget the bad. This quote implies that the past is typically seen through rose-colored glasses, and that we tend to idealize the past. It also suggests that the idea of the "good old times" is subjective, as various people will have different memories and experiences of the past. Eventually, Lord Byron's quote implies that the past is frequently seen in a more favorable light than it in fact was, which we must be careful not to romanticize the past too much.